The need for knowledge of the population size and its cathodes for the study of natural motion. Lack of reliable historical data. The tasks of research under these conditions/Neobkhodimost' znaniya chislennosti naseleniya i ego kategoriy dlya izsledovaniya estestvennago dvizheniya. Otsutstvie dostovernykh svedeniy za proshloe vremya. Zadachi izsledovaniya pri etikh usloviyakh. Short description: The need for knowledge of the population size and its cathodes for the study of natural motion. Lack of reliable historical data. The tasks of research under these conditions. 1902. In Russian. This book is printed on demand. It is a new book and will be printed once your order is received. Reprint in black & white from the original edition. No changes have been made to the original text. The work may contain library stamps and other notations. Hardcover (other binding may be available upon request). The original edition may also be available - feel free to contact us to request availability of the original edition of this book. SKUpodbd66a6d4546167a7.